Road-sweeping machine



J. W. JEMMISON.

ROAD SWEEPING MACHINE.

APPLICATION nuzu JUNE 10. 1919.

1,328,521 Patented Jan. 20,1920.

JOHN WILLIAM JEMMISON, 0F HUDDERSFIELD, ENGLAND, ASSIGNGB TO CLAYTQN &

COMPANY (HUDDERSFIELD) LIMITED, OF HUDDERSEIELD, ENGLAND, A COEPORIL-TION OF GREAT BRITAIN.

ROAD-SW'EEPIIIG MACHINE.

Application field June 10, 1919.

To all whom it may concern:

Be it known that 1, JOHN WILLIAM JEM- MISON, a subject of King George Vof Great Britain, residing at Huddersfield, in the county of York,England, have invented a new and useful Improvement in Road- SweepingMachines, of which the following is a specification.

This invention has reference to road sweeping machines of the typehaving a cylindrical brush or conveyer rotating within an inclosingcasing and adapted to deposit in a receiving receptacle on the machinethe dust or refuse swept into said casing by the contact of therevolving brush with the ground, and more particularly to road sweepinmachines in which the brush in the casing is located clear of the groundand a second or external revolving brush travels over the road surfaceand sweeps the dust and refuse into the casing around which it iscarried by the revolving brush and deposited therebv into the receivingreceptacle, and the object of my invention is to provide an improvedarrangement and combination of a plurality of revolving brushes orconveyors in respective chambers or casings into one of which saidcasings or chambers the dirt or refuse is first delivered by a brushtraveling over the road surface or by the revolving brush in the firstchamber and conveyed by the said brush or conveyer to a second casingand its revolving brush or conveyer which deposits it in the receivingreceptacle except in cases wherein more than two rotary brushes orconveyers are employed in which the last revolving brush or conveyereffects the deposit in the receiving receptacle whereby I am enabled tolocate the receiving receptacle intermediate of the front and rear axlesof the machine or wagon so that the weight, when loaded, will be equallydistributed on the machine, thus avoiding the overhang of the receivingreceptacle beyond the rear axle which is an objectionable feature inmachines of the type referred to.

The object and nature of the invention thus set forth will appear morefully from the accompanying description and drawings and will beparticularly pointed out in the claims.

Figure 1 is a longitudinal elevation, partly in section, of so much of aroad sweeping Specification of Letters Patent.

Patented Jan. 20, 1920.

Serial No. 303,039.

machine as is essential to show the application of my improvementsthereto;

Fig. 2 is a sectional plan taken on line A, B of Fig. 1 and Fig. 3 is atransverse section of the dust receiving receptacle taken on line C, Dof Fig. 2.

Referring to the drawings, a represents the chassis of an ordinary motorvehicle constructed for use as a road sweeping machine, b, c therespective front and rear road axles having the road wheels (Z, cmounted thereon, and f is a small road sweeping brush mounted insuitable bearings at the rear of the machine and suitably driven fromthe rear road wheel as by chain and sprocket wheels 9.

The brush f as it travels over the road surface brushes and forces thedust or refuse up an inclined guide plate 72. and through an opening 2'into a chamber j within which operates a rotary brush or co veyer ismounted on the rear road axle o, the bristles of the brush wiping overor just clearing the interior walls of the chamber. The rotary brush orconveyor 70 is keyed fast on the rear axle c and is driven from one orboth of the road wheels 0, which are loosel mounted on said axle, bymeans of epicyclic gearing Z.

The parts so far described are somewhat as previously proposed in thetype of machine referred to with the exception that in this instance therevolving brush 7c is preferably of reduced diameter.

My invention consists in employing in connection with the revolvingbrush 76, an additional revolving brush m located appropriately abovethe brush is and operating within a chamber 72 in similar manner to therevolving brush is, the said brush at being driven by chain and sprocketwheels 0 fr in one or both of the road wheels 6 so that it is revolvedin a contrary direction to the direction of rotation of the brush 7c.

The chambers 7' and n are formed by thin sheet metal walls j n and in asuitable part of the inclosing walls between the two revolving brushesis an opening or gap 29 through which the dust or refuse, carriedupwardly by the brush or conveyor 7c, will be thrown at a tangent intothe chamber at.

More than two, as for instance, four revolving brushes in respectivecasings could be employed if desired but as this would add considerablyto the height of the machine and unnecessarily complicate it, I considerthat two revolving brushes or conveyers 7a and m arranged somewhat asshown and de scribed will fully serve to effect the object of myinvention.

In the wall a of the upper part of chamber 77. and on the side thereoftoward which the upper nalf of the brush m revolves there is provided anopening or gap r which gives admission to a receiving tank or vesselcarried on the chassis a or suitably secured thereto, in a positionintermediate the front and rear road axles b, 0.

111 this instance, the rece'ver s is provided with a central division Z'3) which curves to each side at its lower end to assist the discharge ofthe dust or re use collected therein. In each side of the receiver thelower end thereof is a hinged door a which is normally secured in closedposition.

il hen released and opened, the refuse in the two halves of the receiverwill gravitate through the openings and may be collected in any suitablereceptacle.

"it will be obvious that many methods of discharging the refuse from thereceiver may be adopteth as for instance, the receiver could be providedwith small pulleys adapted to run on cross rails on the chassis a sothat it cor d be wheeled off the chassis to any duin place; or the saidreceiver could be pivoted on the chassis to enable it to be overturnedto discharge its contents; or it could be provided with means wherebywith suitable lifting tackle it could be lifted oodily off the chassis.In action the dust or refuse swept into the chamber by the road brush 7is carried upward through saidchamber by the revolving brush 7:: and bycentrifugal action is thrown thereby through the gap 2) into the secondchamber 72 through which it is conveyed upwardly by the second revolvingbrush on and thrown thereby through the opening or gap 1" into the receiver s, the brushes in and m revolving in the directions indicated bythe arrows o, o and the refuse passing through the gaps p and 1* asindicated by the arrows 205 to.

By the combined arrangement of a plurality of revolving brushes orconveyers op erating successively in respective inclosing casings orchambers with a means of c0mmunication between the chambers, the pointof delivery of the dust or refuse into the receiving tank is located ata higher level from the ground and consequently the re ceivingreceptacle can be made much higher and therefore of reduced lengthwithout affecting its carrying capacity.

i 1,s2s,521

The arrangement also has the important advantage that the tank orreceiver 3 can be located on the sweeping machine wholly bet-ween thefront and rear axles so that the weight is equally distributed andoverhang beyond the rear axle thus avoided.

The revolving brushes or conveyors may be of any appropriateconstruction and the road bruslff be carried by pivoted arms so that itcan be raised from th road surface wh in use, somewhat as ordinarily.

hough I prefer to employ the combined arrangement of revolving brushesor conveyors in separate chambers in conjunction with the Xtllltll roadsweeping brush will be understood that the revolving h 7.: may be angedto have contact the road surface to form the road iinp; brush and thebrush 7'' be omitted.

aving thus cescribed my invention.

what claim as new and desire to secure by Letters Patent is 1. in a roadsweeping machine, a receptacle for the sweepings, communicating brushchambers arranged one above another the top chamber having an outletinto the said 1'eecptade brushes arranged in the said chambers, andmeans for revolving one lnxush in one direction and the other brush.

road sweeping machine, a recephe sweepings, communicating tacie for vbrush chambers arranged one above another,

the top chamber having an outlet into the 'eptacle and the bottomchamber havi in at its rear and lower part, blUF e arranged in the saidchambers road bru. to drive the dust into 1h arranged the inlet Ol tlebottom chamber and means for revolving all the said brushes the brush ofthe top chamber sing revolved in the reverse direction from the brushnext below it.

3. l he general arrangement, construction and con'ibination of roadsweeping machines in which a plurality of revolving brushes, inrespective intercommunicating chambers convey the dust or refusecollected from the road surface, upwardly and deliver same into a dustre eiving tank or vessel supported on the machine intermediate of thefront and rear road axles, substantially as herein shown and described.

in testimony whereof l affix m signature in the presence of twowitnesses.

JOiilhl 'WlLLilAh f JEli lliilSOll.

Vfitnesscs REGINALD Frrznor Cnarrort, THOMAS HENRY BARROW.

